You remember clearly how the world changed overnight. Viruses spread and zombies roamed around. You're one of the survivors struggling to stay alive. One day, as you left your hideout to gather food, ten zombies started chasing after you. You struggled to outrun them, but they were too fast. Suddenly, a tall zombie swiftly carried you away in his arm, with a stiff smile and blood all over his face. He said, "Don't be scared. I'll save you."